Home / 6,419.88-8,859.40-3,767.26

Finding the Fourth Proportional to 6,419.88, 8,859.40 and 3,767.26

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Solution

The fourth proportional to 6,419.88, 8,859.40 and 3,767.26 is: 5,198.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,419.88 : 8,859.40 = 3,767.26 : x
  2. Step 2: Convert to fraction form
    6,419.88/8,859.40 = 3,767.26/x
  3. Step 3: Cross multiply
    6,419.88x = 8,859.40 × 3,767.26
  4. Step 4: Simplify right side
    6,419.88x = 33,375,663.24
  5. Step 5: Solve for x
    x = 33,375,663.24/6,419.88
  6. Step 6: Final answer
    x = 5,198.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.